package com.lagou;


import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import java.io.IOException;

public class FileDriver {
    public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
        Configuration conf = new Configuration() ;
        Job job = Job.getInstance(conf);
        job.setJarByClass(FileDriver.class);
        job.setMapperClass(FileMapper.class);
        job.setReducerClass(FileReducer.class);
        job.setMapOutputKeyClass(FileBean.class);
        job.setMapOutputValueClass(NullWritable.class);
        job.setOutputKeyClass(FileBean.class);
        job.setOutputValueClass(NullWritable.class);
        FileInputFormat.setInputPaths(job,new Path(args[0]));
        FileOutputFormat.setOutputPath(job,new Path(args[1]));
        boolean result = job.waitForCompletion(true);
        System.exit(result?0:1);
    }
}
